<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
* { margin:0; padding:0;}
body { font-size:12px;}
.comment { margin-top:10px; padding:10px; border:1px solid #ccc;background:#DDD;}
.comment h6 { font-weight:700; font-size:14px;}
.para { margin-top:5px; text-indent:2em;background:#DDD;}
</style>
 <!--   引入jQuery -->
<script src="../scripts/jquery-1.3.1.js" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
   $(function(){
        $('#send').click(function() {
            $.ajax({
			  type: "GET",
			  url: "test.json",
			  dataType: "json",
			  success : function(data){
			         $('#resText').empty();
					  var html = '';
					  $.each( data  , function(commentIndex, comment) {
						  html += '<div class="comment"><h6>' + comment['username'] + ':</h6><p class="para">' + comment['content'] + '</p></div>';
					  })
					 $('#resText').html(html);
			  }
			}); 
        });
   })
//]]>
</script>
</head>
<body>
 <br/>
 <p>
	 <input type="button" id="send" value="加载"/>
 </p>

<div  class="comment">已有评论：</div>
 <div id="resText" >
	
 </div>

</body>
</html>